If an argument reads:

Question

If ,PQ ? QR, then ?PQR is a right angle.
If ?PQR is a right angle, then
PQR is a right triangle.
If ?PQR is a right triangle with ?Q the right angle, then (PQ)2 + (QR)2 = (PR)2.
then we can conclude
(a) PQ ? QR
(b) If PQ ? QR then (PQ)2 + (QR)2 = (PR)2.
(c) If ?PQR is a right angle then (PQ)2 + (QR)2 = (PR)2.
(d) All of these are valid conclusions.
(e) Both answers (b) and (c) are correct.

Answer 1

(e) Both answers (b) and (c) are correct.